a vending machine, provides the following products espresso $0.25, red $0.50, latte $ 0.75, cappuccino $1. the machine only accepts coins of $0.25, $0.50, or $1.00 to acquire the product and when the machine has to give change it only returns 1 coin. there will be cases in which not being able to provide the correct change will return the coin introduced, without providing the product. it is required to design a digital circuit that represents the operation of this machine:

-define the numeration of a number of input and output variables (assign the logical conditions to each variable)

-make a real tbala that defines the input and output variables of the circuit

-determine the Boolean expression for output variables (SOP OR POS)

-simplify the expression obtained -represent the circuit with logical gates

to design a digital circuit that allows to obtain the result of the arithmetic product AyB of 2 bits each for which it is requested the following -define the number of input and output variables in the circuit -make a truth table that defines the input and output variables of the circuit -determine the Boolean expression for output variables in the form POS -simplify the expression obtained -represent the circuit with logic gates -establish the number of integrated circuits required for implementation